Featured
Games
Cultural
Writing tips

Thesaurus.com

Skip to content

Popular Searches

beg
dark
kid
free
house
dangerously
slowly

Dictionary.com

Synonyms & Antonyms

Related Words

natural father

NOUN

biological father

Synonyms

WEAK

natal father

Related Words

Words related to natural father are not direct synonyms, but are associated with the word natural father. Browse related words to learn more about word associations.

biological father

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

Word of the Day

skiddoo

[ski-doo]

Over 500,000 expert-authored dictionary and thesaurus entries

Entry list Careers Contact us Help Cookies, terms, & privacy

IXL Learning's Dictionary Media Group reaches over 500,000,000 learners each year

Comprehensive resource for word definitions and usage

Adaptive learning for English vocabulary

Fun daily word games

English dictionary and learning for Spanish speakers

Spanish-English dictionary, translator, and learning

French-English dictionary, translator, and learning

Immersive learning for 25 languages

Comprehensive K-12 personalized learning

Marketplace for millions of educator-created resources

35,000+ worksheets, games, and lesson plans

Fun educational games for kids

Trusted tutors for 300+ subjects

Math games and learning resources for kids

© 2025 Dictionary Media Group, Inc., a division of IXL Learning