Meaning: A large black bird known for its intelligence.

Part of speech: noun

Example: The raven perched on the branch, watching everything.

Category: Nature › Zoology

Synonyms:

• bird
• corvid

Meaning: A deep, narrow valley formed by erosion.

Part of speech: noun

Example: The hikers crossed the ravine carefully.

Category: Nature › Geography

Synonyms:

• gorge
• valley

Meaning: Untanned animal skin, often used for making leather goods.

Part of speech: noun

Example: The rawhide was used to make sturdy ropes.

Category: Nature › Animal Products

Synonyms:

• leather
• hide

Meaning: The process of planting trees in an area where there were previously trees.

Part of speech: noun

Example: Reafforestation is crucial for combating climate change.

Category: Nature › Environmental Science

Synonyms:

• afforestation
• replanting

Meaning: To gather or harvest a crop or benefit.

Part of speech: verb

Example: Farmers reap the rewards of their hard work during harvest.

Category: Nature › Agriculture

Synonyms:

• harvest
• gather

Meaning: A person or machine that harvests crops.

Part of speech: noun

Example: The reaper worked tirelessly during the harvest season.

Category: Nature › Agriculture

Synonyms:

• harvester
• gatherer

Meaning: To move back or withdraw.

Part of speech: verb

Example: The floodwaters began to recede after the rain stopped.

Category: Nature

Synonyms:

• withdraw
• diminish

Antonyms:

• advance
• increase

Meaning: Having a strong smell; fragrant.

Part of speech: adjective

Example: The garden was redolent with the scent of roses.

Category: Nature › Botany

Synonyms:

• fragrant
• aromatic

Antonyms: odorless

Meaning: A type of tall tree known for its reddish wood.

Part of speech: noun

Example: The redwood trees in California are among the tallest in the world.

Category: Nature › Botany

Synonyms:

• sequoia
• tree

Meaning: A tall, slender-leaved plant that grows in water or marshy areas.

Part of speech: noun

Example: The reeds swayed gently in the breeze.

Category: Nature › Botany

Synonyms:

• cane
• grass

Meaning: Thin and tall, resembling a reed.

Part of speech: adjective

Example: He had a reedy voice that was hard to hear.

Category: Nature › Botany

Synonyms:

• slender
• thin

Meaning: A ridge of rock or coral in the sea.

Part of speech: noun

Example: The Great Barrier Reef is famous for its biodiversity.

Category: Nature › Marine Biology

Synonyms:

• coral reef
• rock formation

Meaning: To plant trees in an area that has been deforested.

Part of speech: verb

Example: The organization aims to reforest the area after the wildfire.

Category: Nature › Conservation

Synonyms:

• replant
• restore

Meaning: The process of planting trees in a deforested area.

Part of speech: noun

Example: Reforestation is essential for restoring ecosystems.

Category: Nature › Conservation

Synonyms:

• tree planting
• afforestation

Meaning: Making one feel fresh or invigorated.

Part of speech: adjective

Example: The cool breeze was refreshing on a hot day.

Category: Nature

Synonyms:

• invigorating
• revitalizing

Antonyms:

• stale
• draining

Meaning: A large deer with antlers, native to Arctic regions.

Part of speech: noun

Example: We saw a reindeer during our trip to Lapland.

Category: Nature › Wildlife

Synonyms: caribou

Meaning: To transfer a plant to a new pot.

Part of speech: verb

Example: It's time to repot the plant as it has outgrown its current container.

Category: Nature › Botany

Synonyms:

• transplant
• replant

Meaning: A cold-blooded vertebrate animal, such as a snake or lizard.

Part of speech: noun

Example: The reptile basked in the sun.

Category: Nature › Zoology

Synonyms:

• cold-blooded animal
• reptilian

Meaning: Relating to reptiles or having characteristics of reptiles.

Part of speech: adjective

Example: The reptilian features of the creature were fascinating.

Category: Nature › Zoology

Synonyms:

• serpentine
• lizard-like

Meaning: A large natural or artificial lake used to store water.

Part of speech: noun

Example: The reservoir provides water for the entire city.

Category: Nature › Water Bodies

Synonyms:

• water storage
• tank

Meaning: A sticky substance produced by some trees and plants.

Part of speech: noun

Example: The resin from the pine tree is used in varnishes.

Category: Nature › Botany

Synonyms:

• gum
• sap

Meaning: Having the qualities of resin; sticky or thick.

Part of speech: adjective

Example: The resinous substance was difficult to clean.

Category: Nature › Botany

Synonyms:

• sticky
• viscous

Meaning: Short for rhinoceros, a large, thick-skinned herbivorous mammal.

Part of speech: noun

Example: The rhino is endangered due to poaching.

Category: Nature

Synonyms:

• rhinoceros
• beast

Meaning: A large, thick-skinned herbivorous mammal known for its horn.

Part of speech: noun

Example: The rhinoceros is often found in African savannas.

Category: Nature

Synonyms:

• rhino
• beast

Meaning: A horizontal underground stem that can produce new shoots and roots.

Part of speech: noun

Example: Ginger grows from a rhizome.

Category: Nature

Synonyms:

• rootstock
• underground stem

Meaning: A type of flowering shrub known for its large blooms.

Part of speech: noun

Example: The rhododendron blooms beautifully in spring.

Category: Nature

Synonyms:

• azalea
• flowering shrub

Meaning: Having a lot of a particular quality or substance.

Part of speech: adjective

Example: This soil is nitrogen-rich.

Category: Nature

Synonyms:

• abundant
• fertile

Meaning: Having many holes or problems.

Part of speech: adjective

Example: The report was -riddled with errors.

Category: Nature

Meaning: To be filled with something undesirable.

Part of speech: verb

Example: The old house was riddled with termites.

Category: Nature

Synonyms:

• infested
• permeated

Meaning: To endure a difficult situation without leaving.

Part of speech: phrasal verb

Example: We decided to ride out the storm in the house.

Category: Nature

Synonyms:

• weather
• endure

Meaning: A long, narrow hilltop or mountain range.

Part of speech: noun

Example: We hiked along the ridge for stunning views.

Category: Nature › Geography

Synonyms:

• crest
• hilltop

Meaning: To encircle something.

Part of speech: phrasal verb

Example: The children ran ring around the tree.

Category: Nature

Synonyms:

• encircle
• surround

Meaning: To encircle something.

Part of speech: phrasal verb

Example: The fence rings round the garden.

Category: Nature

Synonyms:

• surround
• enclose

Meaning: Fully developed and ready to be eaten or used.

Part of speech: adjective

Example: The fruit is ripe and sweet.

Category: Nature › Fruits

Meaning: To become ripe or mature.

Part of speech: verb

Example: The bananas will ripen in a few days.

Category: Nature › Fruits

Meaning: A small wave or series of waves on the surface of water.

Part of speech: noun

Example: The stone created a ripple in the pond.

Category: Nature › Water

Meaning: A strong current that pulls objects away from the shore.

Part of speech: noun

Example: The swimmer was caught in a riptide and struggled to get back.

Category: Nature › Water

Meaning: Split or torn apart.

Part of speech: adjective

Example: The riven landscape showed signs of a recent earthquake.

Category: Nature › Geology

Meaning: A large natural stream of water flowing in a channel to the sea, a lake, or another river.

Part of speech: noun

Example: The river flows through the valley.

Category: Nature › Water

Meaning: The land alongside a river.

Part of speech: noun

Example: We had a picnic on the river bank.

Category: Nature › Water