Stock royalty-free photos and images of Rigorous

Surprised teacher in glasses with cup of coffee

Strict business woman showing her finger at workplace

Portrait of red-haired couple. man is shaking finger and girl is looking guilty.

Portrait of a girl with a book isolated on white background.

The man fastens his blue shirt for some celebration.

Classic wooden dummy in demonstrating pose isolated on white. ( cold and warm light effect )

Classic wooden dummy sitting on the floor in "Hallo" pose isolated on white.

Portrait of serious business man with documents. isolated on white background

Attractive african businesswoman with afro hair, hands on jacket

Face portrait of a handsome man against black background

Funny angry young woman with big head over grey background

Black and white portrait of a young man in a black t-shirt

Strict teacher on the school blackboard background

Angry woman with big head over grey background

Wedding couple portrait indoors

Angry teacher with wooden stick on the school blackboard background

Peaks in the winter sun beam lit

Bird's nest of straw with quail eggs on linen fabric.

Bird's nest of straw with quail eggs on linen fabric.

Picture half naked curly guy at the table with a plate of grapes hands holding his head photo

Attractive elegant business woman sitting on couch at the office in modern style.

Bird's nest of straw with quail eggs on linen fabric.

Portrait of a girl with a book isolated on white background.

Teacher . Portrait of girl with glasses . Business woman with a laptop .

Guy holding a gift near the face, a stern look (retro)

Common Core Sign on white paper. Man Hand Holding Paper with text. Isolated on sky background. Education, Business concept. Stock Photo

Universal geometric logo in the form of a square. Illustration

Naked bodybuilder showing his muscles on a black background demonstrating confidence and strength,

Pocket watch in a beautiful romantic flowers

Beautiful woman in black dress with a brave, strong attitude, posing.

Severe cube with letters, sign with wooden cubes

Businessman writing letter. isolated on white

Young serious woman looking at small man. photo at outdoor

View from above of strict man in white doctors smock looking at camera and showing attention sign. isolated on white background

The figure of a wooden man holds pencils of different colors.

Handwriting text Exact Science. Conceptual photo the precise predictions and rigorous methods of testing

Conceptual hand writing showing Exact Science. Concept meaning the precise predictions and rigorous methods of testing

Mirrored molecular bonds of curved pink intersecting ribbons and vague lines. Abstract digital fractal texture for modern business style with halftone effect

Mirrored triangular shards of curved light blue intersecting ribbons and vertical lines. Abstract digital fractal texture for modern business style with halftone effect

Confident young beautiful woman showing by hand stringent looking at camera posing isolated at white studio background. Accusing female making pointing finger gesture medium long shot

Scenic and rigorous Pacific coast in the Olympic National Park, Washington, USA. Rocks in the ocean and large logs on the beach.

Scenic and rigorous Pacific coast in the Olympic National Park, Washington, USA. Rocks in the ocean and large logs on the beach.

Shar Pei puppy black on black background

Shar Pei puppy black on black background

Word Cloud with COMMON CORE concept create with text only.

Blonde woman sitting in a chair in art nouveau style. Business, elegant businesswoman. Dark portrait. Interior, furniture.

Handwriting text Exam Cancelled, Word Written on the precise predictions and rigorous methods of testing

Handwriting text Exam Cancelled, Business overview the precise predictions and rigorous methods of testing

Inspiration showing sign Exam Cancelled, Word Written on the precise predictions and rigorous methods of testing

Sign displaying Exam Cancelled, Conceptual photo the precise predictions and rigorous methods of testing

Humorously exaggerating, a scientist in a white coat, inside a blue-green room, swings a 20 KG wooden hammer. It symbolizes the potential danger of not upholding rigorous, independently verified scien

Group of lichen on a rock in nature.

Strict middle age business woman at office

Crazy teacher on the school blackboard background

Effective School

Portrait of a man in a cowboy hat

Young students girls feel sad and boring with strict teacher warning in the class

Strict teacher with wooden pointer looking at someone

Strict teacher showing finger on the school blackboard background

Funny angry teacher man on blackboard background

Middle aged Turkish man disinfects his car as a precaution for the pandemic corona virus

Big no sign pressing small 3d human. 3d render.

Pocket watch in a beautiful romantic flowers, monochrome version

Common Core word cloud on green blackboard background

Young handsome businessman. isolated on white background

The big boss concept

Angry unhappy female girl educator teaching study class very strict and holding stick looking at camera angry standing in blackboard background.

Diet concept photo

Angry woman with big head looking at camera over dark background

Pupil refuses to listen to the teacher and mocks her

Pretty teacher with book look at camera

Above view of female forefinger pointing at camera

Young beautiful girl wearing school outfit and glasses

Big woman holding small man and examining him over light grey background

January is observed as Financial wellness month, background with glowing blue and green lights

Business woman teacher with glasses and a suit with chalk the lost in thought at a school board

Young girl playing the violin in the dark. Beautiful girl with shiny hair with a violin

Bird's nest of straw with quail eggs on linen fabric.

This is a northernmost stony shore of Europe. The dark blue sea is reflecting the north sky with heavy clouds.

Rigorous Northern Pacific oceanic coast, Pacific Northwest, Instagram filter.

Sporting shoe of running shoe for going in for sports

Red suede shoes

Blue suede shoes

Common Core - Hand pressing a button on blurred background concept . Business, technology, internet concept. Stock Photo

Common Core - Hand pressing a button on blurred background concept . Business, technology, internet concept. Stock Photo

Stylish young woman in black trousers, white shirt and massive decorations on the neck. Studio portrait of a young business lady.

Portrait of a business woman with a stern look

Portrait of mature yellow rooster on the poultry yard

Black and white textured winter mountains in High Tatras

There are a man with a boat on the northernmost shore of Europe. The dark blue sea is reflecting the north sky with heavy clouds. The distant hill is sunlit.

Portrait of beautiful confident businesswoman in blue suit

Beautiful woman in black dress with a brave, strong attitude, posing.

Portrait of fashionable model young woman sitting in a white chair. Business, elegant businesswoman. Interior, furniture.

Conceptual hand writing showing Exact Science. Concept meaning the precise predictions and rigorous methods of testing

Writing note showing Exact Science. Business concept for the precise predictions and rigorous methods of testing Elements of this image furnished by NASA

Angry teacher in retro style with pointer on blackboard background

Elegant smiling woman in eyeglasses on a brick wall background. Adult beautiful businesswoman in a black leather skirt. Copy space

Scenic and rigorous Pacific coast in the Olympic National Park, Washington, USA. Rocks in the ocean and large logs on the beach.

Scenic and rigorous Pacific coast in the Olympic National Park, Washington, USA. Rocks in the ocean and large logs on the beach.